Match-ignition composition.



' STATES ATENT Faro MATCHJGNITION COMPOSITION.

No Drawing.

To all whom it may concern Be it' known that I, HARRY WILLIAMSCHAnL'roN, a citizen of Canada, residing at Ottawa, in the county ofCarleton and Province of Ontario,'Canada,"have invented new and usefulImprovements in Match-Ignition Composition, of which the following is aspecification. I

This invention ertains to non-poisonous substitutes for ye lowphosphorus, and relates exclusively to salts of this element in whosemolecules are one or more atoms of nitrogen. As a class these salts arestable, but, owing probably to the slight afii nity of nitrogen forother elements, they are readily acted on by powerful oxidizing agents.They yield match ignition compositions which strike on any surface, orby varying the proportions of the ingredients in the mixture, excellentsafety matches may be produced.

Considered as a class the salts of phosphorus containing nitrogen arestable voluminous solids that are easily prepared and can be handledwithout the slightest inconvenience. Most of these possess to a greateror less degree the ability to enter into chemical action with potassiumchlorate, (when present in formed. match heads), upon the application ofslight friction. On its quality in this res ect depends the value of anyeasily oxidizal le material in match ignition compositions. This is nota characteristic common to easily oxidizable materials as a class, andseems to be entirely absent in time the addition of other easilyoxidizable Specification of Letters Patent.

Patented Mar. 10, 1914.

Application filed May 13, 1911. Serial No. 627,066.

materials has a very beneficial efiect. If a small amount ofsesquisulfid of-phosphorus o r amorphous phosphorus be present thesensitiveness is materially increased.

-The following is given purely as an example ofa formula that mlght beused.

Phosphorus nitrogen compound I parts.

Potassium chlorate 3 Powdered glass '1 part. Iron oxid 1 Zinc oxid 1Glue (60% solution in water.) 4 parts.

Phospham has been particularly referred.

present as impurities.

I claim 1. In a match ignition composition a nitrogenous phosphoruscompound, an oxidizing agent and chemically inert material.

1 2. In a match ignition composition "a nitrogenous phosphorus compound,an oxidizing agent, a filler,.frictional matte-rand a binding agent.

3. In a match ignition composition a nitrogenous phosphorus compoundcontaining as impurities other easily oxidizable materials, potassiumchlorate, oxid of zinc, powdered glass and glue.

4. In a match ignition composition phospham containin stable sulfids ofphosphorus as impurlties, an oxidizing agent, a

filler,frictional matter and a binding agent.

. Ottawa, May 10th, 1911.

" HARRY wnimius CHARLTON.

Witnesses:

H. O. FALKINS, A. IRWIN.

